It's only 0.7 inches longer, and that appears to be mostly the design of the (plastic) lower front and rear bumpers. (Hard to tell because the angles in the comparison pictures aren't identical, but with identical wheelbases it's unlikely the steel frame is any longer.)
It's only a half-inch wider, and that's a good thing for both styling and performance.
And it's fully 2.7 inches shorter, so this coupe might actually be lighter than the sedan.

And it could have been even lighter yet if it was shorter in length, instead of longer.